1.

KMnO4 decomposes on heating according to the equation- 2KMnO4→K2MnO4+MnO2+O2 On heating KMnO4, 1 litre of oxygen was collected at room temperature and it was found that the test tube had undergone a loss in mass of 1.32 g. If one litre of hydrogen under the same conditions of temperature and pressure has a mass of 0.0825 g. Calculate the relative molecular mass of oxygen.

Answer»

KMnO4 decomposes on heating according to the equation-

2KMnO4K2MnO4+MnO2+O2

On heating KMnO4, 1 litre of oxygen was collected at room temperature and it was found that the test tube had undergone a loss in mass of 1.32 g. If one litre of hydrogen under the same conditions of temperature and pressure has a mass of 0.0825 g. Calculate the relative molecular mass of oxygen.




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